Slice oranges into rounds. Split vanilla bean
lengthwise. Pour juice into crock pot or stainless steel pot, add
oranges, vanilla extract and bean, cinnamon. Bring up to a moderate boil
and hold there for at least 15 minutes. Then reduce heat to simmer, and
continue to cook 30-45 minutes longer. Add maple syrup if necessary to
sweeten. May be kept warm all day – just add more juice in small amounts
each time.